公开(公告)号：US20180321412A1

公开(公告)日：2018-11-08

申请号：US15948702

申请日：2018-04-09

Applicant: Chevron U.S.A. Inc.

Inventor： Haijing WANG ,  Hanming WANG ,  Emmanuel TOUMELIN

IPC: G01V3/20 ,  G01N15/08 ,  G01N27/02

CPC classification number: G01V3/20 ,  G01N15/088 ,  G01N27/026 ,  G01N2015/0853

Abstract: A method for determining water-filled porosity and water salinity in a well includes obtaining complex dielectric permittivity of earth formations, either from dielectric measurements representative of well cores, or from dielectric well logs; selecting a dielectric mixing law for the index number m; plotting a m-th root of complex dielectric permittivity at a specified frequency in the complex domain, wherein m is an index number; determining a matrix permittivity, a water salinity, and a water-filled porosity based on the complex dielectric permittivity and the dielectric mixing law; and displaying the water salinity and the water-filled porosity.